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45
RESULTS

Media Type
38
texts
4
images
2
movies
1
audio
Availability
45
Always Available
Year
1
2015
3
2014
2
2013
1
2011
1
2010
1
2008
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Topics & Subjects
11
Radio
11
receiver
8
regenerative receiver
7
amateur radio
7
radio
6
amateur
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Collection
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Creator
3
defense technical information center
2
charles kitchin
2
nasa technical reports server (ntrs)
2
sleeper, m. b. (milton blake), 1896-
1
bucher, elmer eustice, 1885-
1
david w. ishmael
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Language
41
English
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